A mixing device for composite powder
By introducing heating elements and temperature controllers into the mixing device, combined with the design of stirring blades and mixing chamber, the problem of low mixing efficiency of composite powders is solved, achieving efficient mixing and drying, and improving the dispersion and uniformity of materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI DIPIN DIGITAL TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing mixing equipment cannot efficiently handle materials containing thermoplastic components, high viscosity materials, and composite powders that require simultaneous drying, resulting in materials that are difficult to melt or soften and low mixing efficiency.
The system uses heating elements and a temperature controller in conjunction with a stirring assembly. Through the design of the stirring blades and mixing chamber, it achieves material circulation and heat exchange. Combined with the functions of the filter screen and mixing rod, it achieves uniform mixing and drying of the material.
It achieves efficient mixing and drying of composite powders, improving the dispersion effect and mixing uniformity of materials.
Smart Images
Figure CN224371176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite powder processing technology, specifically to a composite powder mixing device. Background Technology
[0002] In industries such as chemical, food, pharmaceutical, and new materials, the uniform mixing of composite powders is a crucial step in ensuring product quality and performance. Currently, common composite powder mixing equipment on the market mainly includes double-spiral cone mixers, horizontal zero-gravity mixers, and plow-type mixers.
[0003] Most existing mixing devices only have a single mechanical stirring function, which cannot achieve efficient processing of materials containing thermoplastic components, high viscosity materials, or composite powders that require simultaneous drying. For example, in the preparation of plastic modified composite materials and hot melt adhesive powders, the lack of heating function makes it difficult for the materials to melt or soften, resulting in the components not being fully dispersed and combined. For powders containing oils and waxes, the flowability is poor at room temperature, and they are prone to agglomeration and clumping, resulting in low mixing efficiency. Utility Model Content
[0004] To address the above problems, the purpose of this utility model is to provide a mixing device for composite powders, which solves the problem of not being able to efficiently process composite powders containing thermoplastic components, high viscosity materials, and those requiring simultaneous drying. The device activates the heating element, and the temperature controller monitors the temperature of the protective layer in real time. When the temperature reaches the set value, the power of the heating element is automatically adjusted to maintain a constant temperature. During the circulation of the material in the mixing chamber and the stirring drum, the material continuously receives heat transferred from the protective layer, thus achieving cyclic drying.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mixing device for composite powder, comprising a tank assembly, a stirring assembly, and a mixing assembly. The tank assembly includes a mixing tank, the stirring assembly includes a first motor, a stirring shaft, and a stirring drum, and the mixing assembly includes a second motor, a rotating shaft, and a mixing chamber. The inner wall of the mixing tank has a tank groove, and a heating element is installed on the inner side of the tank groove. A protective layer is connected to the inner wall of the mixing tank. Stirring blades are connected to the outer wall of the stirring shaft. A filter screen is provided on the inner side of the stirring drum, and a reflux groove is provided on the inner side of the stirring drum. A discharge hole is provided on the bottom surface of the stirring drum, and a mixing rod is connected to the outer wall of the rotating shaft.
[0006] The beneficial effects of this utility model are as follows: when the first motor is started, the stirring shaft drives the stirring blades to rotate. The material is turned over and sheared by the stirring blades in the stirring drum. Under the action of centrifugal force, some of the material moves towards the periphery of the stirring drum and enters the mixing chamber through the filter screen. In the mixing chamber, it exchanges heat with the protective layer. The material that does not pass through the filter screen continues to be stirred in the stirring drum. This cycle is repeated to achieve material mixing.
[0007] In order for the stirring shaft to drive the stirring blades to start stirring and mixing the materials:
[0008] As a further improvement to the above technical solution: the top of the mixing tank is connected to a feed inlet, the bottom of the feed inlet penetrates the top wall of the mixing drum and extends to the inside of the mixing drum, and a rubber sealing ring is provided at the connection between the feed inlet and the mixing drum.
[0009] The beneficial effects of this improvement are as follows: different component materials are poured into the feed inlet in sequence, and the materials fall into the mixing drum by gravity. After the addition is completed, the feed inlet protective cover is closed, the first motor is started, and the mixing shaft drives the mixing blades to start mixing the materials.
[0010] To ensure that the material flows into the discharge pipe through the discharge hole at the bottom of the mixing drum under the influence of gravity:
[0011] As a further improvement to the above technical solution: the bottom of the mixing tank is connected to a discharge pipe via a flange, the discharge pipe is connected to a pneumatic butterfly valve, four support feet are welded to the lower end of the mixing tank, and adjustable bolts and anti-slip pads are provided at the bottom of the support feet. The protective layer is a smooth, heat-conducting metal layer with a roughness Ra≤0.8μm.
[0012] The beneficial effects of this improvement are as follows: After mixing is completed, the pneumatic butterfly valve is opened by controlling the operation panel. Under the action of gravity, the material flows into the discharge pipe through the discharge hole at the bottom of the mixing drum and is finally discharged from the mixing tank. After the discharge is completed, the pneumatic butterfly valve is closed.
[0013] To ensure that the material continuously receives heat transferred from the protective layer during its circulation within the mixing chamber and stirring drum, thus achieving circulating drying:
[0014] As a further improvement to the above technical solution: the heating element is electrically connected to the temperature controller on the operation panel via a wire, and a groove adapted to the shape of the heating element is opened at one end of the protective layer connected to the inner wall of the mixing tank. The depth of the groove is 1mm greater than the thickness of the heating element. The heating element is located between the protective layer and the tank groove. The heating element is a high-temperature resistant ceramic heating element and is fixed to the tank groove by thermally conductive silicone.
[0015] The beneficial effects of this improvement are as follows: the target heating temperature is set on the control panel, the heating element is activated, the temperature controller monitors the temperature of the protective layer in real time, and the material continuously receives heat transferred from the protective layer during the circulation process in the mixing chamber and the stirring drum, thus achieving cyclic drying.
[0016] In order for the first motor to drive the stirring shaft to rotate via the flexible coupling, the stirring blades stir the material inside the stirring drum:
[0017] As a further improvement to the above technical solution: the first motor is electrically connected to the operation panel via a shielded wire, the top of the stirring shaft is connected to the output end of the first motor via a flexible coupling, and the end of the stirring shaft away from the first motor is rotatably connected to the bottom surface of the stirring drum via a deep groove ball bearing.
[0018] The beneficial effects of this improvement are as follows: the speed of the first motor is set on the control panel, the start button is pressed, the first motor drives the stirring shaft to rotate through the flexible coupling, the stirring blades stir the material in the stirring drum, and the motor speed is adjusted in real time according to the mixing condition of the material during operation.
[0019] In order to move the material towards the periphery of the mixing drum, it enters the mixing chamber through the filter screen and exchanges heat with the protective layer inside the mixing chamber:
[0020] As a further improvement to the above technical solution: a mixing chamber with a width of 40mm is formed between the protective layer and the outer wall of the mixing drum; the stirring shaft is coaxially arranged at the center of the inner side of the mixing drum; and the distance between the outer edge of the stirring blade and the inner wall of the mixing drum is 10mm.
[0021] The beneficial effects of this improvement are as follows: when the first motor is started, the stirring shaft drives the stirring blades to rotate. The material is turned over and sheared by the stirring blades in the stirring drum. Under the action of centrifugal force, some of the material moves towards the periphery of the stirring drum and enters the mixing chamber through the filter screen. In the mixing chamber, it exchanges heat with the protective layer. The material that does not pass through the filter screen continues to be stirred in the stirring drum. This cycle is repeated to achieve material mixing.
[0022] To allow the material to move towards the periphery of the mixing drum under centrifugal force, materials meeting the particle size requirements pass through the filter screen and enter the mixing chamber, where they are further mixed by the mixing rod.
[0023] As a further improvement to the above technical solution: the circumferential wall of the stirring drum is evenly provided with four relief grooves, each relief groove being 80mm wide and 10mm deep, and the filter screen is fixed by being embedded in the grooves on the inner wall of the relief groove by the locking blocks on both sides.
[0024] The beneficial effects of this improvement are as follows: When installing the filter screen, align the locking block with the slot on the inner wall of the clearance groove, gently push it in to complete the fixation, start the equipment, and the stirring blades will periodically rotate to stir the material. Under the action of centrifugal force, the material moves towards the peripheral wall of the stirring drum. The material that meets the particle size requirements passes through the filter screen and enters the mixing chamber. In the mixing chamber, it is further mixed by the mixing rod. The mixed material returns to the stirring drum through the return groove and mixes with the material in the drum again, thereby improving the mixing uniformity.
[0025] To ensure that the material is stirred and dispersed by the mixing rod after entering the mixing chamber through the filter screen under the centrifugal force of the mixing blades:
[0026] As a further improvement to the above technical solution: the second motor is electrically connected to the operation panel via a control line, the bottom of the rotating shaft is connected to the output end of the second motor via a rigid coupling, a bottom block is connected to the bottom surface of the protective layer, the end of the rotating shaft away from the second motor is rotatably connected to the bottom block via an angular contact ball bearing, the mixing rod is fixed to the rotating shaft by welding, and the weld is ground.
[0027] The beneficial effects of this improvement are as follows: when the second motor is started, the rotating shaft and the mixing rod are driven to rotate synchronously through the rigid coupling. When the material enters the mixing chamber through the filter screen under the action of centrifugal force of the stirring blades, the mixing rod stirs and disperses the material, making the material more uniformly mixed. The mixed material is pushed by the mixing rod and flows back to the stirring drum through the return tank to complete a mixing cycle. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model.
[0029] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.
[0030] Figure 3 for Figure 1 A magnified structural diagram at point B in the middle.
[0031] Figure 4 This is a schematic diagram of the structure of the stirring cylinder of this utility model.
[0032] Figure 5 This is a cross-sectional view of the stirring cylinder of this utility model.
[0033] In the diagram: 1. Tank assembly; 11. Mixing tank; 12. Tank trough; 13. Feed inlet; 14. Heating element; 15. Protective layer; 16. Discharge pipe; 2. Stirring assembly; 21. First motor; 22. Stirring shaft; 23. Stirring drum; 24. Filter screen; 25. Return trough; 26. Clearance trough; 27. Stirring blades; 28. Discharge hole; 3. Mixing assembly; 31. Second motor; 32. Rotating shaft; 33. Mixing rod; 34. Mixing chamber; 35. Bottom block. Detailed Implementation
[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0035] like Figure 1-5As shown, a mixing device for composite powder includes a tank assembly 1, a stirring assembly 2, and a mixing assembly 3. The tank assembly 1 includes a mixing tank 11. The stirring assembly 2 includes a first motor 21, a stirring shaft 22, and a stirring drum 23. The mixing assembly 3 includes a second motor 31, a rotating shaft 32, and a mixing chamber 34. The inner wall of the mixing tank 11 has a tank groove 12, and a heating element 14 is installed on the inner side of the tank groove 12. A protective layer 15 is connected to the inner wall of the mixing tank 11. Stirring blades 27 are connected to the outer wall of the stirring shaft 22. A filter screen 24 is provided on the inner side of the stirring drum 23, and a reflux groove 25 is provided on the inner side of the stirring drum 23. A discharge hole 28 is provided on the bottom surface of the mixing tank 11. A mixing rod 33 is connected to the outer wall of the rotating shaft 32. A feed inlet 13 is connected to the top of the mixing tank 11. The bottom of the feed inlet 13 penetrates the top wall of the mixing drum 23 and extends to the inner side of the mixing drum 23. A rubber sealing ring is provided at the connection between the feed inlet 13 and the mixing drum 23. Different component materials are poured into the feed inlet 13 in sequence. The materials fall into the mixing drum 23 by gravity. After the addition is completed, the protective cover of the feed inlet 13 is closed, the first motor 21 is started, and the mixing shaft 22 drives the mixing blades 27 to start mixing the materials. The bottom of the mixing tank 11 is connected to the discharge pipe 16 through a flange. The discharge pipe 16 is connected to a pneumatic butterfly valve. The mixing tank 11 has four support feet welded to its lower end. Adjustable bolts and anti-slip pads are installed at the bottom of the support feet. The protective layer 15 is a smooth, heat-conducting metal layer with a roughness Ra≤0.8μm. After mixing, the pneumatic butterfly valve is opened via the control panel. Under gravity, the material flows through the discharge hole 28 on the bottom surface of the mixing drum 23 into the discharge pipe 16, and finally discharges from the mixing tank 11. After discharge, the pneumatic butterfly valve is closed. The heating element 14 is electrically connected to the temperature controller on the control panel via a wire. One end of the protective layer 15 connected to the inner wall of the mixing tank 11 has a groove adapted to the shape of the heating element 14. The depth of the groove is 1mm greater than the thickness of the heating element 14. Heating element 14 is located between the protective layer 15 and the tank trough 12. The heating element 14 is a high-temperature resistant ceramic heating element, which is fixed to the tank trough 12 by thermally conductive silicone. The target heating temperature is set on the operation panel, and the heating element 14 is started. The temperature controller monitors the temperature of the protective layer 15 in real time. During the circulation of the material in the mixing chamber 34 and the stirring drum 23, the material continuously receives the heat transferred by the protective layer 15 to achieve cyclic drying. The first motor 21 is electrically connected to the operation panel through a shielded wire. The top of the stirring shaft 22 is connected to the output end of the first motor 21 through a flexible coupling. The end of the stirring shaft 22 away from the first motor 21 is rotatably connected to the bottom surface of the stirring drum 23 through a deep groove ball bearing.Set the speed of the first motor 21 on the control panel and press the start button. The first motor 21 drives the stirring shaft 22 to rotate through the flexible coupling. The stirring blades 27 stir the material in the stirring drum 23. During operation, the motor speed is adjusted in real time according to the mixing condition of the material. A mixing chamber 34 with a width of 40mm is formed between the protective layer 15 and the outer wall of the stirring drum 23. The stirring shaft 22 is coaxially set at the center of the inner side of the stirring drum 23. The distance between the outer edge of the stirring blades 27 and the inner wall of the stirring drum 23 is 10mm. Start the first motor 21, and the stirring shaft 22 drives the stirring blades 27 to rotate, and the material is stirred. Inside the mixing drum 23, the stirring blades 27 agitate and shear the material. Under centrifugal force, some material moves towards the periphery of the mixing drum 23 and enters the mixing chamber 34 through the filter screen 24. In the mixing chamber 34, it exchanges heat with the protective layer 15. Material that does not pass through the filter screen 24 continues to be stirred within the mixing drum 23. This cycle achieves material mixing. The peripheral wall of the mixing drum 23 is evenly provided with four clearance grooves 26, each 80mm wide and 10mm deep. The filter screen 24 is fixed by inserting two side clips into the grooves on the inner wall of the clearance grooves 26. When installing the filter screen 24, align the clips with the clearance grooves 26. The slots on the inner wall of the 6th section are gently pushed in to secure the device. The equipment is then started, and the stirring blades 27 periodically rotate to agitate the material. Under centrifugal force, the material moves towards the periphery of the mixing drum 23. Material meeting the particle size requirements passes through the filter screen 24 and enters the mixing chamber 34, where it is further mixed by the mixing rod 33. The mixed material returns to the mixing drum 23 via the return trough 25 to mix again with the material inside the drum, improving the mixing uniformity. The second motor 31 is electrically connected to the operation panel via a control line. The bottom of the rotating shaft 32 is connected to the output end of the second motor 31 via a rigid coupling. The bottom surface of the protective layer 15 is connected to... The system includes a bottom block 35. The end of the rotating shaft 32 furthest from the second motor 31 is rotatably connected to the bottom block 35 via an angular contact ball bearing. The mixing rod 33 is fixed to the rotating shaft 32 by welding, and the weld is polished. When the second motor 31 is started, it drives the rotating shaft 32 and the mixing rod 33 to rotate synchronously via a rigid coupling. When the material enters the mixing chamber 34 through the filter screen 24 under the centrifugal force of the stirring blades 27, the mixing rod 33 stirs and disperses the material, making the mixture more uniform. The mixed material, pushed by the mixing rod 33, flows back to the stirring drum 23 through the return trough 25, completing one mixing cycle.
[0036] The working principle of this utility model is as follows: Different component materials are poured into the feed inlet 13 in sequence. The materials fall directly into the mixing drum 23 by gravity. After the addition is completed, the protective cover of the feed inlet 13 is closed, and the first motor 21 is started. The first motor 21 drives the mixing shaft 22 to rotate through the elastic coupling. The mixing blades 27 on the outer wall of the mixing shaft 22 begin to tumble and shear the materials in the mixing drum 23 to achieve preliminary mixing. The target heating temperature is set on the operation panel, and the heating element 14 is activated. When the materials circulate in the mixing chamber 34 and the mixing drum 23, the protective layer 15 transfers the heat generated by the heating element 14 to the materials to achieve circulating drying. Under the action of centrifugal force, some materials move towards the periphery of the mixing drum 23. Materials that meet the particle size requirements enter the mixing chamber 34 through the filter screen 24 and exchange heat with the protective layer 15 in the mixing chamber 34. Materials that do not pass through the filter screen 24 continue to flow in the mixing drum. The mixing chamber 23 is stirred, and the mixing is achieved through this cycle. The stirring blades 27 rotate periodically to stir the material. Under the action of centrifugal force, the material moves towards the periphery of the mixing chamber 23. The material that meets the particle size requirements passes through the filter screen 24 and enters the mixing chamber 34. The second motor 31 drives the rotating shaft 32 and the mixing rod 33 to rotate synchronously through a rigid coupling. The mixing rod 33 stirs and disperses the material entering the mixing chamber 34, making the material more uniformly mixed. The mixed material is pushed by the mixing rod 33 and returns to the mixing chamber 23 through the return groove 25 on the inner side of the mixing chamber 23, where it is mixed again with the material in the chamber to improve the uniformity of mixing. When the material is uniformly mixed, the pneumatic butterfly valve connected to the discharge pipe 16 is opened by controlling the operation panel. Under the action of gravity, the material in the mixing tank 11 flows into the discharge pipe 16 through the discharge hole 28 on the bottom surface of the mixing chamber 23 and is finally discharged from the mixing tank 11. After the discharge is completed, the pneumatic butterfly valve is closed.
[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. A mixing device for composite powder, comprising a tank assembly (1), a stirring assembly (2), and a mixing assembly (3), wherein the tank assembly (1) comprises a mixing tank (11), the stirring assembly (2) comprises a first motor (21), a stirring shaft (22), and a stirring drum (23), and the mixing assembly (3) comprises a second motor (31), a rotating shaft (32), and a mixing chamber (34), characterized in that: The mixing tank (11) has a tank groove (12) on its inner wall, a heating element (14) is installed on the inner side of the tank groove (12), a protective layer (15) is connected to the inner wall of the mixing tank (11), a stirring blade (27) is connected to the outer wall of the stirring shaft (22), a filter screen (24) is provided on the inner side of the stirring cylinder (23), a reflux groove (25) is provided on the inner side of the stirring cylinder (23), a discharge hole (28) is provided on the bottom surface of the stirring cylinder (23), and a mixing rod (33) is connected to the outer wall of the rotating shaft (32).
2. The mixing device for composite powder according to claim 1, characterized in that: The top of the mixing tank (11) is connected to a feed inlet (13), the bottom of which penetrates the top wall of the mixing drum (23) and extends to the inside of the mixing drum (23). A rubber sealing ring is provided at the connection between the feed inlet (13) and the mixing drum (23).
3. The mixing device for composite powder according to claim 1, characterized in that: The bottom of the mixing tank (11) is connected to the discharge pipe (16) via a flange. The discharge pipe (16) is connected to a pneumatic butterfly valve. Four support feet are welded to the lower end of the mixing tank (11). Adjustable bolts and anti-slip pads are provided at the bottom of the support feet. The protective layer (15) is a smooth, heat-conducting metal layer with a roughness Ra≤0.8μm.
4. The mixing device for composite powder according to claim 1, characterized in that: The heating element (14) is electrically connected to the temperature controller on the operation panel via a wire. The protective layer (15) is connected to the inner wall of the mixing tank (11) at one end, and a groove adapted to the shape of the heating element (14) is provided. The depth of the groove is 1 mm greater than the thickness of the heating element (14). The heating element (14) is located between the protective layer (15) and the tank groove (12). The heating element (14) is a high-temperature resistant ceramic heating element, which is fixed to the tank groove (12) by thermally conductive silicone.
5. The mixing device for composite powder according to claim 1, characterized in that: The first motor (21) is electrically connected to the operation panel via a shielded wire. The top of the stirring shaft (22) is connected to the output end of the first motor (21) via a flexible coupling. The end of the stirring shaft (22) away from the first motor (21) is rotatably connected to the bottom surface of the stirring drum (23) via a deep groove ball bearing.
6. The mixing device for composite powder according to claim 1, characterized in that: The protective layer (15) forms a mixing chamber (34) with a width of 40 mm between it and the outer wall of the mixing cylinder (23). The stirring shaft (22) is coaxially arranged at the center of the inner side of the mixing cylinder (23). The distance between the outer edge of the stirring blade (27) and the inner wall of the mixing cylinder (23) is 10 mm.
7. The mixing device for composite powder according to claim 1, characterized in that: The circumferential wall of the stirring drum (23) is evenly provided with four relief grooves (26), each relief groove (26) is 80mm wide and 10mm deep, and the filter screen (24) is fixed by being embedded in the groove of the inner wall of the relief groove (26) by the locking blocks on both sides.
8. The mixing device for composite powder according to claim 1, characterized in that: The second motor (31) is electrically connected to the operation panel via a control line. The bottom of the rotating shaft (32) is connected to the output end of the second motor (31) via a rigid coupling. The bottom surface of the protective layer (15) is connected to a bottom block (35). The end of the rotating shaft (32) away from the second motor (31) is rotatably connected to the bottom block (35) via an angular contact ball bearing. The mixing rod (33) is fixed to the rotating shaft (32) by welding, and the weld is polished.